Grain Systems PNEG-692 - Manual (Page 17)

1998 Service School Top Dry
17
1997 AIRSWITCH UPDATE
1997 Airswitch Update Kit Installation Instructions
Packing List:
(1) TF-1278 TD Airswitch assembly
(1) FH-1310 Heyco cord connector
(1) FH-1309 Lock Nut 1/2”
(4) S-280 Screw #10- 16 x 5/8 self
drill
(1) PNEG-628 TD ‘97 Airswitch Update
Kit Instructions
Tool Required:
One pair of wire cutters
One pair of wire strippers
One drill with a 5/16” nut driver and 3/4” drill
bit
One regular screwdriver or Entrelec terminal
tool (depends on what type of terminals the unit
has)
Installing the new airswitch:
1) On either side of the master fan/heater,
drill one 3/4” hole even with the fan/
heater unit in a valley on the bin
sidewall.
2) Insert the airswitch probe through the 3/
4” hole.
3) Position the housing so the cord exists
the housing horizontally, and the vents
open downward.
4) Use the four self drilling screws to
mount the housing to the bin sidewall.
5) Caulk between the housing and the
sidewall to seal.
6) Remove a knockout in the fan control
box on the master heater.
7) Install the Heyco cord connector in the
knockout hole.
8) Run the cord from the airswitch through
the Heyco cord connector and into the
control box.
9) Tighten the Heyco cord connector onto
the cord.
Wiring the new airswitch:
1) Remove the three wires from the termi-
nal strip that are attached to the old
airswitch (opposite J7-9, J7-11 and J7-
10 on the terminal strip).
2) Attach the green wire from the cord on
the new airswitch to the terminal strip
opposite J7-09.
3) Attach the white wire from the cord on
the new airswitch to the terminal strip
opposite J7-11.
4) Attach the black wire from the cord on
the new airswitch to the terminal strip
opposite J7-10.
5) In two fan units, place dipswitch #3 on
the slave fan/heater in the “on” position.
This will bypass the old airswitch in the
slave unit.
6) When starting the dryer with grain in the
drying chamber make sure that the
airswitch does not close until both units
are half speed.